EP0301106A4

EP0301106A4 - Active medium for gas laser with ionizing particle excitation.

Info

Publication number: EP0301106A4
Application number: EP19880901483
Authority: EP
Inventors: Andrei Jurievich Alexandrov; Viktor Alexandrovich Dolgikh; Oleg Movsumovich Kerimov; Alexei Jurievich Samarin; Igor Georgievich Rudoi; Arkady Matveevich Soroka
Original assignee: NI TS PO TEKH LAZERAM AN SSSR; NI TS TEKH LAZERAM AN SSSR
Current assignee: NI TS PO TEKH LAZERAM AN SSSR; NI TS TEKH LAZERAM AN SSSR
Priority date: 1987-01-28
Filing date: 1988-01-15
Publication date: 1989-06-26
Also published as: US4841537A; JPH01502067A; CN88100332A; SU1674299A1; IN168628B; WO1988005971A1; EP0301106A1

Description

ΡΕΑΚΤΒΗΑΒΗΑΡΕΡΕΡΕΡΕΑΑΑΑΒΒΒΒΒГГ0ΑΑΑΕΡΑΕΡΑΕΡΑΒΟБУБУБУΕΗΕΗΕΗΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜΕΜ ΕΜΟΗΟΗΤΕΜΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑΑ

The area of technology The present invention is not available on quantum 5, but rather on an active medium for a gas laser with excitation.

Pρedshesτvuyuschy uροven τeχniκi Izvesτna aκτivnaya sρeda for geneρatsii to sp-Zzπe ρeχοde neοna, sοsτοyaschaya of helium with neοna οbschey κοntse τρatsiey dο 10 7 * 10 and sledοv aρgοna, κοτορaya vοzbu daeτsya bysτρym eleκτρichesκim ρazρyadοm dρρPeά ορϊsz, ν. 4, η.5.1965 _” Μау (Νθ \ ν Υοгк, ¥ .Β.Βг1ά £ θз, Α.Ν.

"ϊϊϊϊ. .ууу.. .ааζζΟΟΟ 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 118 ^' аνΙ 118ηηηзϊϊϊϊΙΙΙΙ,,,,,, ,ΑΑΑΑ,,,,,,,,,,,,,,,,, ,ηηηηΟΟΟΟΟΟΟΟΟΟΟΟΟΟΟΟΟΟ

15 ρ.573-580, ρ.573-577).

Here, for the first time, generation was generated at the atmo- sphere, which was not visible in the visible region of the spectra (= 5852.5 Α) at the part of Zr '1/2 I - Zz'Ι 1/2 ^. One of the LAS of the laser was extremely low, a capillary discharge of the discharge

20 nullity of radiation at a low level, the genera- tion has a self-limited character with a duration of no more than 10 ns;

The active medium for generation on

25 Зр 'ϊ / 2 ₀ -Зз' 2 inlet: neon (Λ = 5852, 5Α) consisting of neon and water with a total concentration of ^ 2 * 10 cm ^{~ 3} unit of consumption θρϊϊсз Соттαιϊса-ν.Зό, α.З, 1981, ЬеЬгизгу (.Αгцз-Бегάзт, B. Зсьтϊеάθг, Б..Τ

30 Βгϊηк, Τ.Ι.δзΙаайηη, .α., Езοηез ^π Α Ьь Ρгеззиге 585, Νеοη Ηуάго§еη азазег ", ρ.223-226).

Here, the initial quasi-emergency mode was generated for Λ = 5852.5 Α with a duration of up to 140 ns; - 2 -

9 μL), the volume of the laser is also limited.

A low SFA of the indicated lasers is associated with an unstable composition of the active medium and inefficient occupancy of the green laser due to excitation of electric excitation

5 sorts

Also known is an active medium for a gas laser with excitation of depleting particles, consisting of helium, neon, and argon, or an increase in concentration of more than 10 cm ^{~ 3}

10 at the rate of Z'ΙΟ cm ^~ up to a magnitude of 15% of the total concentration (Зϋ, Α, Ι344Ι79). Here, with a moderate specific power of pumping, it can be realized that existing sources of radiation in pulsed mode can be realized for 1–1 seconds.

15 on R = 5852, ^~ £, and 0.3% on R = 7245 Α. The excitation of impaired particles ensures the possibility of generation in a large active volume and the generation of practical disruption of 10 ДPD is shared by the population

On the 20th day of the laser, it could be $ 2-2.5 for λ = 5852.5 Α and 1-1.5 for Λ = 7245 Α. The reduction of the APD compared with the marginal cost of significant non-standard absorption in the active medium, which also reduces the specific radiation power.

25 DISCLOSURE OF THE INVENTION

The main task of the invention was to develop an active medium for a gas laser with excitation of particles by introducing a larger amount of it to increase the volume.

30 PDA and the specific radiation power of the laser at 3 - without transitions is not.

The problem is solved in that an active medium for a gas laser is proposed that is excited by ionizing particles, containing helium, neon, argon, or an accumulated value of 10 ppm. - 3 -

Argon or property οτ 3- dο with the value ρavnο 15% οτ οbschey κοntsenτρatsii, κοτορaya, sοglasnο izοbρeτe NIJ, sοdeρzhiτ πο at meρe still οdin κοmποnenτ, you are a bρanny of gρuππy: κsenοn, vοdοροd, izοτοπy vοdοροda or mixture eτiχ κοmποnenτοv in ρazlichnyχ sοcheτaniyaχ, πρ eτοm κοntsenτρatsiya κazhdοgο out of either of these mixtures, out of 10 is selected, up to a value of $ 20 from the interest of the ar- gon or consumer.

Κρaτκοe οπisanie cheρτezhey Β ποsleduyuschem izοbρeτenie ποyasnyaeτsya ποdροbnym ο saniem aκτivnοy sρedy, sοglasnο izοbρeτeniyu, sο ssylκ E on πρilagaemye cheρτezhi on κοτορyχ: φig.Ι - sχemaτichnο izοbρazhaeτ gazοvy lazeρ with iο- niziρuyuschim radiation sπeρedi view; Fig. 2 - the kinetic scheme of the process of decontamination of the lower laser level.

The best embodiment of the invention The gas laser (Fig. Ι) contains a working chamber I for an active environment and an electronic gun 2, which is provided with a free accessory. On the other hand, cameras I have secured a 5.6 channel, which is a part of the laser, and it is generally connected to a system of 7 input and output of an active medium.

The excitation of an active medium can be realized by differentiating particles - various elec- trons, electricity, X-rays, neutrons, and others. - by particles of the relevant sources of the known components. Usκορenny in eleκτροnnοy πushκe 2 πuchοκ 4 bysτρyχ eleκτροnοv προχοdiτ cheρez φοlgu 3 ρabοchuyu κameρu I, zaποlnennuyu cheρez sisτemu 7 aκτivnοy sρedοy, sοglasnο izοbρeτeniyu ^{'sοdeρzhaschey} not Νe, Αg or Ζg and πο at meρe still οdin κοmποnenτ, vybρanny of gρuππy: κsenοn , WATER, WATER PRODUCTS, with a total concentration of more than 10 cm. Concentration of ΑΓ or ΚΓ Β we are in the range of 3 * 10 cm to a value equal to Ι - 4 -

There is a general concentration, an active medium, and a concentration of 7-Θ, Ε _E , its emulsion or mixtures thereof - at a rate of 10 cm, an equal to 20% of the percentage of the investment

5 there are atomic ions, in the main it’s not ⁺ ”It ^{+ is} very easy to concentrate on these gases, it is important to get rid of the other types of activity. Я A number of ionic reactions of these ions reverse the molecular ions of ^{+ +} , as a result of dissociative ρ rekombi

10 nations are populated by the upper laser level as shown in Fig. 2. Here e ₃ - "slow" secondary electrons, forming at the moment of slowing down; v ύ ₀ ~ laser quantum (λ = 5852.5 Α); * g, ^~ k ώ _g - spontaneous emission of dimers __ ^* and _χ *, above the lines are indicated

15 particles participating in the competition. The lower laser level is deactivated by the operator, which is subject to the manifestation of __ +. As a result of the Zμ-Zz transitions, it does not establish a steady population invasion and amplification, while the rest of 5 and 6 ensures

20 Neutral communication necessary for laser generation. Further, in the process of the indicated kinetic processes in the absence of xenon, a ___. * Dimen- sion is generated, which is radiatively divided into two atom

We have found that non-acceptance by

25 aκτivnοy sρede οbuslοvlenο imennο dimeρami ΑG ^ (ΚΓ ^* ₂₎ Ηalichie neρezοnansnοgο ποglοscheniya οπρedelyaeτ maκsimal hydrochloric eφφeκτivnοsτ radiation vyvοda ^• _ in sοοτveτsτvii izvesτnοy φορmulοy% = (4 - \ 'β / N ₀₎ ₀ ² N β - κο- eφφitsienτy nenasyschennοgο amplification and unprofitable πο-

30 swallows. For the optimal composition of the active medium, which does not contain, is it for I = 5852.5 Α s? ₀ - ^ 3 "by n ^ 0.45. We found that the introduction to the composition of the act of a new environment He, n. or its costs in a small percentage increases, practically without changing from ₀ , reduce β by 4 or more times, that is, increase ^ to 0.7 or more, which - 5 -

equivalent to an increase in SDA of 1.5 and more times. The PDA has been increased and the available specific capacity of the pump is increased, and the increased specific power of the generation has been increased. A decrease in β is associated with a sharp decrease in κ

5 centers of dimers> * due to the rapid flow of processes I – IV (Fig. 2), which are in contact with the processes that are underway in the manifestation of !Г!

We have established that the dimers used in this case, _{2 more, are} significantly less absorbing laser radiation.

Of 10 in chasτnοsτi due to πρibliziτelnο πορyadοκ bοl necks sκοροsτi sποnτannοgο ρasπada (πρi ποsτοyannοy inheritance nοy mοschnοsτi naκachκi κοntsenτρatsiya ^Χe _- ^~ 10 ρaz changed Chez than in the absence of xenon).

Β in case of use of water or its products

15 reduction κοntsenτρatsii dimeροv _Αg ^* προisχοdiτ πο Te same πρichinam, πρi eτοm evοlyutsiya iοnοv £ H ⁺ π προisχοdiτ sχeme H ^ 2 "H ^{+ 5>} ZΗ-" Mr. ^and ποglοschenie lazeρ radiation gο on vseχ ^'eτaπaχ vοοbsche οτsuτsτvueτ.

The minimum concentration of He, Η ^ or its products

20 is determined by the fact that due to the flow of processes I – IV (Fig. 2), the stationary concentration of Α ^~ ₂ decreases by at least 1.2 times (in typical conditions this increases by 10%). The maximum percentage of sharing is shared by the dissociative

25 Nation ₂ nations with its transfer to the other countries (dashed line in Fig. 2) and the experiment is installed on it.

Β the claimed active medium of high pressure (at a center above 10 cm) is first used small

30 κοntsenτρatsiya κsenοna, vοdοροda or egο izοτοποv, κοτο- ρaya πρaκτichesκi not vliyaeτ on eφφeκτivnοsτ Check veρχnegο lazeρnοgο uροvnya and the lower sκοροsτ dezaκτivatsii negο, nο in το same vρemya, κaκ usτanοvlenο us οbesπechi vaeτ suschesτvennοe decrease of neρezοnansnοgο ποglοscheniya, chτο πρivοdiτ increase κ ΚPD laser and ude - 6 -

new generation capacity. With this, all the accessibility of the active environment is lost, v, Α, Ι344Ι79, including the absence of its degradation.

The following are exemplary embodiments of the proposed invention. P ρ and m ρ I.

Electron gun 2 (Ι) е generates a bunch of quick-release elec- trons with a cross section of 4x34 svg with a proximity of the current I сыг / play, for a duration of I msec. The Chinese film 3 has a thickness of 50 μm, the energy of the electron beam is about 150 kEΒ. In working chamber I, flat dielectric circuits of 5.6 were installed. Field 5 has a 99.9% loss factor over the generation wavelength, and field 6 loss factor is varied for maximum laser power. The area of the area of 5.6 is 2x3 СΝГ, so the optical volume of the laser is 2x3x34 ^ 200 cm ³ .

When the active environment is empty, the camera contains 5.4- ΙΟ ¹⁹ cm ^{~ 3} (2 atm)) e, 4.2- ΙΟ ¹³ cm ^{~ 3} (120 Τορ) Ν e, 2.1 * 10 cm (60 Τορ) "g (κοntsenτρatsiya aρgοna οκοlο 3%) and πρi blizκοy οπτimalnοy προzρachnοsτi zeρκa- la 6N = 26% eneρgiya geneρatsii on I = 5852,2 Α ^ - 4,2 mJ (mοschnοsτ 4,2 κΒτ; 21 Βτ / cm ³⁾ that corresponds to a PDL ^ 0Λ%. Βvedenie in eτu aκτivnuyu sρedu 3,5.10 ^cm3 (I Τορ Χe (1,6 οτ κοntsenτρatsii ΑG) and isποlzοvanie zeρκala Ε- = 6 with 14% (decrease οπτimalnοy προzρachnοsτi οbus- lοvlenο decreasing β>) ποzvοlyaeτ ποluchiτ Ετ = 8, 5 mJ (capacity 8.5 kt; 42 Βt / cm ³ ) and ΚPD ^ - 0.8. Reduced concentration up to 3.5 * 10 cm (0.1 Τορ), this reduces the energy of the laser Ε, and an increase in the concentration is up to 3.5 * 10 cm ^{~ 3} (10 Τορ) (16 from the concentration of lh) leads to a drop in the generation energy of up to 3.5 mD.

The same results can be used instead. - 7 -

Not water or activity. P ρ and m ρ 2.

EXPERIMENTAL INSTALLATION, AS IN EXAMPLE I. When downloading the working chamber I of the active medium containing

5 2.7. ΙΟ ¹⁹ cm ~ ³ (I atm) Ηе, 4-Ι0 ¹⁹ cm ~ ³ (1.5 atm) Ν _Θ , 6.7--- ¹ - cm ~ ³ (190 )ορ) Κг (accentuation κ и τ 9 9) and Ε = 20% of the range 6 on D = 7245 Α the generation energy is 5 mJ (capacity 5 kW; 25 Βτ / cm ³ ), which corresponds to Κ PD - 0.2%. Introduction to this Active

10 average 7 * 10 cm ~ ³ (2 Τορ) X е (1% from the concentration of oxygen) and a decrease in the gap of 6 to 11% will allow you to reach the laser energy 12 mJ (12 /); 5 . With an optimal percentage of water consumption 3.5 * ΙΟ ¹ cm ^{~ 3} (I ρορ) energy generation

15 is II mJ at D = 7245 Α. P ρ and m ρ 3.

С An experimental installation, as in Example I, an electronic gun generates an electronic gun with a speed of 40 m / s, lasting 30 minutes.

20 When you start the operating camera I have an active sr "6 meal, with a 5.4--0 ^1U cm ^" ^ (2 atm) ме, 2 ^* Ι0 ¹⁰ s ^{~ ώ} (60 Τ Νе 7 ^» 10 Τ 7 Τ Τ 20 ( ) ΑΓ (accentuation

1%), and n = 14% of the 6th energy generation

Λ = 5852.5 Α is around 16 mJ (capacity 500 Β

25 2.5 Βτ / cm ³ ), which corresponds to Д PD ___ !, 1%.

Introduction to the active medium 1.3 * 10 cm ^{~ 3}

(0.4 Τορ) Χе πρи π = 8% of the range 6 (2% of the percentage

Λg) allows you to increase laser energy up to 23 mJ (can ^ - 800 Βτ; 4 Βτ / cm ³ ) and achieve ДПД ^ Ι, 6%.

30 Introduction to the active medium 10 cm ^~ ° (0.3 ° C) Ηг _> Calls you to receive laser energy of 26 mJ (power ^ 900 Β

4, 5 Βτ / cm ³ ) and ΚPD ^ Ι, 8. Use 7- Ι0 ¹⁵ cm ^{~ 3}

(0.2 Τορ) Χе and 7 ^* Ι0 ¹⁵ cm ^{~ 3} (0.2 Τορ) Η ₂ gives a laser energy of 25 ΜJ. Decrease in the xenon concentration (in the absence of water) up to 1.3 * 10 cm ^~ (0.03%) - 8 - what about the generation of energy to I? md / m There is a practical condition for the initial level, and an increase in the percentage is 8 ^” см0 cm ~ ³ (5%) (25

5 13 mJ.

Example 4.

The experimental installation, as in the case of 1.3. When working on the camera, I have an active medium that contains 2.7-10 ^Ι9 cm ~ ³ (I atm) Η e, 2.7-19 ¹⁹ cm ~ ³ (I atm) Ν e

10 2 * Ι0 ^Ι8 cm ^{~ in} (60 Τορ) _y (concentration of argon 4) at D = 7245 Α the laser energy is 10 mJ (the area is 330 Βτ, 1.6 Βτ / cm ³ ), in addition to 0.35 Reduction to the active medium 3.5 * 10 ° cm ~ ³ (I Τορ) However, you can increase the laser energy up to 22 MJ (power

15,700 Βτ; 3.5 Βτ / cm ³ ) and ДPD up to 0.7%. Introduction to the active medium 3 * 10 cm ~ ³ (I Τορ) зв You can generate an energy of 24 mJ 800 Β; 4 Βτ / cm ³ ), that is, the PDA and the specific power will radiate twice as much. The use of the activity in the same concentration instead of the water ensures energy

20 lasers 20 mJ.

An effective environment, as per the invention, allows you to save all active accessibility factors, if necessary, increase the operating voltage by 1.5 to 2 minutes.

25 Advancement

A gas laser with an active medium, according to the invention, can be found in machinery, in the form of optical communication, without damaging the consumer, in the home.

Claims

- 9 -

ΦΟΡΜУЛΑ ИБΟБΡΕΤΕΗИЯ

An effective medium for a gas laser with excitation of depleting particles, containing helium, neon, aromatic, or more with a total concentration of more than 10 cm

5 κοntsenτρatsii aρgοna or κρiπτοna οτ 3 * 10 cm dο ve masks, ρavnοy Ι% οτ οbschey κοntsenτρatsii, οτlichayuschayas τem, chτο οna sοdeρzhiτ πο menyπey meρe still οdin κοmπο- nenτ, vybρanny of gρuππy: κsenοn, vοdοροd, izοτοπ vο dοροda or mixture eτiχ different components in different accounts

10 points, and at the same time the concentration of each of them or mixtures thereof is chosen at a rate of 10 cm.